fix change detection in sync()

frontend.py

@@ -432,16 +432,17 @@ def asset_to_tiles(asset):
     for setup_id in app.config["SETUP_IDS"]:
         log.info("[Setup {}] Getting old config".format(setup_id))
         config = ib.get(f"setup/{setup_id}")["config"][""]
-
-        old_config = config.copy()
+        setup_changed = False
 
         for schedule in config["schedules"]:
             if schedule["name"] == "User Content":
                 log.info('[Setup {}] Found schedule "User Content"'.format(setup_id))
 
-                schedule["pages"] = pages
+                if pages != schedule["pages"]:
+                    schedule["pages"] = pages
+                    setup_changed = True
 
-        if old_config != config:
+        if setup_changed:
             log.info("[Setup {}] Config has changed, updating".format(setup_id))
             ib.post(
                 f"setup/{setup_id}",